561923892 has 72 divisors (see below), whose sum is σ = 1478533056. Its totient is φ = 186608448.

The previous prime is 561923837. The next prime is 561923893. The reversal of 561923892 is 298329165.

561923892 is a `hidden beast` number, since 5 + 619 + 23 + 8 + 9 + 2 = 666.

561923892 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561923893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 303313 + ... + 305159.

Almost surely, 2^561923892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561923892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (739266528).

561923892 is an abundant number, since it is smaller than the sum of its proper divisors (916609164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561923892 is a wasteful number, since it uses less digits than its factorization.

561923892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2165 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 561923892 is about 23704.9339168031. The cubic root of 561923892 is about 825.1998986678.

The spelling of 561923892 in words is "five hundred sixty-one million, nine hundred twenty-three thousand, eight hundred ninety-two".